Laser Safety Program Development at Texas A&amp;M University—Issues and Challenges

Vasudevan, Latha; Menchaca, Daniel I.; Tutt, James H.

doi:10.1097/hp.0000000000000328

Cited by 5 publications

(2 citation statements)

References 1 publication

(1 reference statement)

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“…Beta minus radiation consists of electrons, while beta plus radiation consists of positrons, which are the antimatter counterpart of the electron [ 30 ]. Both X and gamma rays are characterized by high penetration and a plate made of lead is needed as an effective shield against them [ 31 ]. UV radiation capable of causing ionization has a wavelength in the range of 100–280 nm (UVC) and is absorbed by the atmosphere [ 28 , 32 ].…”

Section: Ionizing Radiation As a Source Of Reactive Oxygen Speciesmentioning

confidence: 99%

Ionizing Radiation as a Source of Oxidative Stress—The Protective Role of Melatonin and Vitamin D

Nuszkiewicz

Woźniak

Szewczyk-Golec

2020

IJMS

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Ionizing radiation (IR) has found widespread application in modern medicine, including medical imaging and radiotherapy. As a result, both patients and healthcare professionals are exposed to various IR doses. To minimize the negative side effects of radiation associated with oxidative imbalance, antioxidant therapy has been considered. In this review, studies on the effects of melatonin and vitamin D on radiation-induced oxidative stress are discussed. According to the research data, both substances meet the conditions for use as agents that protect humans against IR-induced tissue damage. Numerous studies have confirmed that melatonin, a hydro- and lipophilic hormone with strong antioxidant properties, can potentially be used as a radioprotectant in humans. Less is known about the radioprotective effects of vitamin D, but the results to date have been promising. Deficiencies in melatonin and vitamin D are common in modern societies and may contribute to the severity of adverse side effects of medical IR exposure. Hence, supporting supplementation with both substances seems to be of first importance. Interestingly, both melatonin and vitamin D have been found to selectively radiosensitise cancer cells, which makes them promising adjuvants in radiotherapy. More research is needed in this area, especially in humans.

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Section: Ionizing Radiation As a Source Of Reactive Oxygen Speciesmentioning

confidence: 99%

Ionizing Radiation as a Source of Oxidative Stress—The Protective Role of Melatonin and Vitamin D

Nuszkiewicz

Woźniak

Szewczyk-Golec

2020

IJMS

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“…In addition, developing safety rules during laser use [1], preparation of laser protection glasses for specific wavelengths [2], developing optical limiting materials [3], and designing and preparing trap filters [4] were proposed. Therefore, laser protection technologies [5] must be developed to reduce industrial and medical costs while realizing widespread laser applications.…”

Section: Introductionmentioning

confidence: 99%

Laser Protection Properties of Multi-Band Non-Regularized Highly Reflective Films

Deng

Su²

2022

Coatings

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With the increasing exploitation of lasers, single-band laser protection has been extensively studied. However, single-band laser protection techniques have remained expensive and failed to meet protection requirements for multi-band lasers. In addition, the actual use of protective films requires a specific transmittance, which is generally not met by regular films. Here, we deposited three non-regularized highly reflective films using SiO2 as the low-refractive-index material and TiO2, HfO2, and Ta2O5 as the high-refractive-index materials by thermal evaporation for achieving multi-band laser protection. To verify the effectiveness of the films, the variation in transmittance, damage threshold, standing-wave electric field, and damage morphology of the films were analyzed at two laser wavelengths, and their protection mechanisms were evaluated based on optical properties and damage resistance. The results showed that the reflectances of the prepared non-regularized films at 1064 nm and 532 nm were greater than 99%, and the laser-induced damage thresholds for TiO2/SiO2, HfO2/SiO2, and Ta2O5/SiO2 films were 5.99, 5.89, and 9.99 J/cm2 at 1064 nm and 3.04 J/cm2, 1.48 J/cm2, and 4.93 J/cm2 at 532 nm, respectively, demonstrating good laser protection. The present work provides a practical and effective solution for multi-band laser protection and the prepared films may be used in numerous laser applications.

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Open source remote monitoring of research lasers

Walker

Bormett

et al. 2021

Optics & Laser Technology

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Laser Safety Program Development at Texas A&M University—Issues and Challenges

Cited by 5 publications

References 1 publication

Ionizing Radiation as a Source of Oxidative Stress—The Protective Role of Melatonin and Vitamin D

Ionizing Radiation as a Source of Oxidative Stress—The Protective Role of Melatonin and Vitamin D

Laser Protection Properties of Multi-Band Non-Regularized Highly Reflective Films

Open source remote monitoring of research lasers

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